Home / 145,643,974.90-200,991,648.21-79,568,752.84

Finding the Fourth Proportional to 145,643,974.90, 200,991,648.21 and 79,568,752.84

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Solution

The fourth proportional to 145,643,974.90, 200,991,648.21 and 79,568,752.84 is: 109,806,497.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,643,974.90 : 200,991,648.21 = 79,568,752.84 : x
  2. Step 2: Convert to fraction form
    145,643,974.90/200,991,648.21 = 79,568,752.84/x
  3. Step 3: Cross multiply
    145,643,974.90x = 200,991,648.21 × 79,568,752.84
  4. Step 4: Simplify right side
    145,643,974.90x = 15,992,654,777,922,916
  5. Step 5: Solve for x
    x = 15,992,654,777,922,916/145,643,974.90
  6. Step 6: Final answer
    x = 109,806,497.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.